Heavy duty container

ABSTRACT

A heavy duty paperboard shipping container has a body formed from a pair of telescoping tubular elements wherein all but one of the walls of the container body are double-ply in thickness throughout their entire width, and wherein one wall is double-ply in thickness throughout the majority of its width and is tripleply for a minority of its width adjacent one corner of the container body.

United States Patent 1191 Shepherd 1 Apr. 10, 1973 HEAVY DUTY CONTAINER[75] Inventor: Charles J. Shepherd, Pasadena, Tex.

[73] Assignee: Container Corporation of America,

Chicago, Ill.

22 Filed: Jan. 12,1972

211 App1.No.: 217,090

[52] US. Cl. ..229/23 R, 229/37 [51] Int. Cl ..B65d 13/00, B65d 5/00[58] Field of Search ..229/23 DT, 23 A, 229/23 R, 37 R [56] ReferencesCited UNITED STATES PATENTS 206,719 8/1878 Gibson ..229/23 A 1,121,94712/1914 Surmann ..229/23 R 2,019,995 11 1935 Rippen ..229/23 B x2,491,206 12/1949 Potts ..229/23 R 3,1 18,587 1/ 1964 Welshenbach..229/23 BT 3,157,345 1 H1964 George ..229/23 BT 3,361,326 1/1968 Croleyet a]. ..229/37 R 3,643,856 2/1972 Jones ..229/37 R PrimaryExaminer-Davis T. Moorhead Attorney-Carpenter, Ostis & Lindberg [57]ABSTRACT A heavy duty paperboard shipping container has a body formedfrom a pair of telescoping tubular elements wherein all but one of thewalls of the container body are double-ply in thickness throughout theirentire width, and wherein one wall is double-ply in thickness throughoutthe majority of its width and is triple-ply for a minority of its widthadjacent one corner of the container body.

10 Clains, 12 Drawing Figures PAIENIEUMR 1 0191s SHEET 3 OF lllllllFIGJZ FIGLII HEAVY DUTY CONTAINER It is a primary object of thisinvention to provide, in a heavy duty container of the type described,an improved corner arrangement which is relatively easy to construct andassemble and also which is extremely rigid and durable.

A more specific object of the invention is to provide, in a shippingcontainer of the type described, a wall construction wherein all but oneof the walls are doubleply and one wall comprises: one uninterruptedply, one ply formedof two panels meeting in a butt joint, and a securingflap extending from one corner of the container beyond said butt joint.

These and other objects of the invention will be apparent from anexamination of the following description and drawings.

DRAWINGS FIG. 1 is an exploded perspective view of a heavy duty shippingcontainer embodying features of the invention with the closure meansbeing shown on only one end of the container body;

FIG. 2 is a horizontal section of the structure illustrated in FIG. 1;

FIGS. 3 and 4 are plan views of the tubular members in flat conditionfrom which the body of the container illustrated in FIG. 1 is formed;

FIGS. 5, 6, 7, and 8 correspond generally to FIGS. 1, 2, 3, and 4,respectively, but illustrate yet another embodiment of the invention;

It will be understood that, for purposes of clarity, certain elementshave been intentionally omitted from certain views where they arebelieved to be illustrated to better advantage in other views.

Referring now to the drawings for a better understanding of theinvention and particularly to FIGS. 1 and 2, it will be seen that theheavy duty shipping container embodying features of the inventionincludes a body, generally designated B, and a cap, generally designatedC, adapted to close one end of the body. A similar cap may be providedfor the closure of the other end of the container body. Other closuremeans, such as overlying flaps not shown, but well known in the art, maybe employed for providing a closure for either end of the body. I

The details of cap C are not shown as the cap may be of conventionaltray type construction well known in the art.

Still referring to FIGS. 1 and 2, it will be seen that the body B of thecontainer is formed from a pair of tubular elements or tubes T1 and T2which are laminated to each other and positioned in telescopingrelationship to form a vertical sleeve or tubular body wherein three ofthe walls are double-ply in thickness throughout their entire width, andthe fourth wall is double-ply throughout the majority of its width andis triple-ply throughout a minority of its width adjacent one corner ofthe body.

Tubes T1 and T2 may be formed from cut and scored rectangular blanks ofpaperboard, preferably corrugated paperboard, illustrated in FIGS. 3 and4, respectively, of the drawings.

Referring now to FIGS. 3, wherein tube T1 is illustrated in a flatcondition, it will be seen that the tube is divided, by a plurality ofparallel score lines, into a plurality of panels which reading from leftto right, are indicated by the numerals 10, 12, 14, 16, and 18. When theblank is folded into a tubular configuration it will be seen that thedimensions of center panels 12, 14, and 16 correspond generally to thedimensions of the three walls W1, W2, and W3 of the container body,which are double-ply in thickness throughout their entire width. Atopposite ends of the blank are a relatively narrow end panel 10, on theleft, and relatively wide end panels 18, on the right.

Turning now to FIG. 4 of the drawings, it will be seen that tube T2 islikewise divided, by a plurality of parallel score lines, into threecenter panels 22, 24, and 26, which have dimensions corresponding to thedimensions of walls W1, W2, and W3 of the container body, a relativelynarrow end panel 20, at the left, and a relatively wide end panel 28, atthe right.

In forming the body, the container tubes T1 and T2 are adhesivelysecured to each other and then folded on their score lines into tubularstructures and telescoped together to provide a sleeve-like body asillustrated in FIG. 1 with the tube TI on the outside and the tube T2 onthe inside. It will be seen that the three walls W1, W2, and W3 aredouble-ply in thickness throughout their entire width, whereas thefourth wall W4 is two-ply in thickness throughout the majority of itswidth and three-ply thickness for a minority of its width adjacent onecorner.

The fourth wall W4 includes: an outer ply formed entirely of wide endpanel 18 of tube T1; an inner ply formed from narrow end panel 10 oftube T1 and wide end panel 28 of tube T2 which are disposed in abutting,co-planar relationship and form a butt-joint 30 located closely adjacentone comer of the container; and an inner securing flap formed fromnarrow end panel 20 of tube T2 which extends from the comer of thecontainer beyond but-joint 30 and is secured to panels 10 and 28 inface-to-face relationship so as to cover the butt-joint 30.

Referring now to FIGS. 5 through 8 for illustration of anotherembodiment of this invention, it is to be noted that elements shown inFIGS. 5 through 8 which correspond to the elements heretofore describedinconnection with description of FIGS. 1 through 4 have the referencenumerals of elements in FIGS. 1 through 4 except that such numerals areincreased by 100.

The bottom of container shown in FIG. 5 may be closed by closure flaps,not shown, but well known in the art.

The body of the container of FIG. 5 is formed from the tubes T101 andT102. This embodiment is generally similar to the embodiment heretoforedescribed having walls W101, W102, and W103 of the same typeconstruction as walls W1, W2, and W3.

The fourth wall W104 includes: and inner ply formed entirely of wide endpanel 118 of tube T102; an outer ply formed from narrow end panel oftube T102 and wide end panel 128 of tube T101 which are disposed inabutting, co-planar relationship forming a butt-joint 130 locatedclosely adjacent one corner of the container; and an outer securing flapformed from narrow end panel 120 of tube T101 extending from the cornerof the container beyond the butt-joint and being secured to panels 110and 128 in face-to-face relationship covering the butt-joint 130. Theinner and outer plies are secured to each other in face-to-facerelationship.

A still another embodiment of the invention is shown in FIGS. 9 through.12 where elements corresponding to the elements shown in FIGS.- 1through 4 have reference numeral of the elements in FIGS. 1 through 4except that such numerals are increased by 200.

The body of the container of FIG. 9 is formed from tubes T201 and T202as heretofore generally described in reference to preceding embodiments.In this embodiment, the walls W201, W202, and W203 are of the same typeconstruction as walls W1, W2, and W3. Here, however, the fourthcontainer wall W104 includes: an inner ply formed from narrow end panel210 and wide end panel 218 both panels being portions of the tube T202and being disposed in abutting, coplanar relationship forming abutt-joint 230 closely adjacent a corner of the container; an outer plyformed entirely of wide end panel 228 of tube T201; and an outersecuring flap formed from narrow end panel 220 of tube T201 andextending from the corner of the container beyond the butt-joint 230 andbeing secured to panel 228 in face-to-face relationship. The inner andouter plies of the wall W204 are secured to each other in face-to-facerelationship, as was the case with other embodiments.

I claim:

1. An improved corner construction for a heavy duty shipping containerhaving a tubular body and end closure means for closing the ends of saidbody wherein said body comprises:

a. a pair of first and second tubes, formed from paperboard andadhesively secured to each other in telescoping relation, each of saidtubes including five panels hingedly attached along parallel fold lines,wherein:

i. each of the three center panels has a width correspondingsubstantially to the width of one of three walls of said body;

ii. the two end panels have a combined width substantially equal to atleast the width of the fourth wall of said body ith one of said endpanels being relatively wide and the other panel being relativelynarrow;

b. saidtubes being disposed one within the other,

with the three center panels of each tube positioned in face-to-facerelation to provide doubleply thickness for said three walls of saidbody.

c. said fourth wall of said body being double-ply in thicknessthroughout the majority of its width and having a joint section at oneside thereof, adjacent one corner of said body which is triple-ply inthickness;

d. said fourth wall having:

i. one ply formed entirely from one of the wide end panels;

ii. another ply formed from the other of the wide end panels and one ofthe narrow end panels having adjacent end edges forming a butt-joint;

iii. a securing flap formed from the other narrow panel and extendingfrom said corner beyond said butt-joint.

2. A corner construction according to claim 1,

wherein the ply having said butt-joint is formed from end panels of thesame tube.

3. A comer construction according to claim 1,

wherein the ply having said butt-joint is formed from en els ofdifferent tub s.

1 3 corner construction according to claim 1,

wherein said one ply is located outwardly of said other ply and saidsecuring flap.

5. A corner construction according to claim 1, wherein said one ply islocated between said other ply and said securing flap.

6. A comer construction according to claim 1, wherein said one ply islocated inwardly of said other ply and said securing flap.

7. A corner construction according to claim 1, wherein said other ply islocated between said one ply and said securing flap.

8. A comer construction according to claim 1, wherein said other ply islocated inwardly of said one ply and said securing flap.

9. A corner construction according to claim 1, wherein said closuremeans includes closure flaps hingedly attached to the ends of saidcontainer body walls and secured to each other in overlapped relation.

10. A corner construction according to claim 1, wherein said closuremeans includes at least one cap adapted to telescopically receive an endportion of said container body.

l t i

1. An improved corner construction for a heavy duty shipping containerhaving a tubular body and end closure means for closing the ends of saidbody wherein said body comprises: a. a pair of first and second tubes,formed from paperboard and adhesively secured to each other intelescoping relation, each of said tubes including five panels hingedlyattached along parallel fold lines, wherein: i. each of the three centerpanels has a width corresponding substantially to the width of one ofthree walls of said body; ii. the two end panels have a combined widthsubstantially equal to at least the width of the fourth wall of saidbody with one of said end panels being relatively wide and the otherpanel being relatively narrow; b. said tubes being disposed one withinthe other, with the three center panels of each tube positioned inface-to-face relation to provide double-ply thickness for said threewalls of said body. c. said fourth wall of said body being double-ply inthickness throughout the majority of its width and having a jointsection at one side thereof, adjacent one corner of said body which istriple-ply in thickness; d. said fourth wall having: i. one ply formedentirely from one of the wide end panels; ii. another ply formed fromthe other of the wide end panels and one of the narrow end panels havingadjacent end edges forming a butt-joint; iii. a securing flap formedfrom the other narrow panel and extending from said corner beyond saidbutt-joint.
 2. A corner construction according to claim 1, wherein theply having said butt-joint is formed from end panels of the same tube.3. A corner construction according to claim 1, wherein the ply havingsaid butt-joint is formed from end panels of different tubes.
 4. Acorner construction according to claim 1, wherein said one ply islocated outwardly of said other ply and said securing flap.
 5. A cornerconstruction according to claim 1, wherein said one ply is locatedbetween said other ply and said securing flap.
 6. A corner constructionaccording to claim 1, wherein said one ply is located inwardly of saidother ply and said securing flap.
 7. A corner construction according toclaim 1, wherein said other ply is located between said one ply and saidsecuring flap.
 8. A corner construction according to claim 1, whereinsaid other ply is located inwardly of said one ply and said securingflap.
 9. A corner construction according to claim 1, wherein saidclosure means includes closure flaps hingedly attached to the ends ofsaid container body walls and secured to each other in overlappedrelation.
 10. A corner construction according to claim 1, wherein saidclosure means includes at least one cap adapted to telescopicallyreceive an end portion of said container body.